Crusher.



R. E. LEIGHTON.

I CRUSHER.

' APPLICATION FILED FEB. 3, I916.

1,214,693. Patented Feb. 6,1917.

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\q i Kb V 4/ "i i 'w INVENTOR ATTORNEYS R. E. LEIGHTON. CRUSHEK APPLICATION FILED FEB. 3, 1916.

1,214,693. I Patented Feb. 6,1917.

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INVENTOR wnwsss BY ATTORNEYS 1n: mmms Plans 450.. rnomuma wAsnmn mm a a R. E. LEIGHTON.

CRUSHER.

APPLICATION FILED FEB. 3, 1916.

1,214,693. Patented Feb. 6, 1917.

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INVENTOR By MW ATTORNEYS m: NORRIS Pnnzs cm. Pnumu'rum. WASNING run. a c

' @TAllEb PATENT ROBERT EUBANK LEIGHTGN, OF KINGSTQN, NEW YORK, ASSIGNOR TO UNIVERSAL ROAD MACHINERY 00., A CGRPOBATIGN 6F NEW YORK.

GBUSHEB.

Application filed February 3, 1916.

To all whom it may concern:

Be it known that I, Bonner EUBANK LnIoIrroN, a citizen of the United States, and a resident of Kingston, county of Ulster, and State of New York, have invented certain new and useful Improvements in Crushers, of which the following is a specification.

The main objects of this invention to provide an improved crusher particularly adapted for use in breaking or pulverizing stone or ore, or other matter; to provide in a crusher an improved jaw plate and improved means for holding the same in position; to provide in a crusher improved adjustable means for actuating a movable jaw; and to provide other improvements as will appear hereinafter.

In the accompanying drawings Figure 1 is a vertical longitudinal section of an improved crusher constructed in accordance with this invention; Figs. 2 and 3 are a top plan view and an end elevation of an improved swinging jaw forming a part of the same; Figs. 4 and 5 are a top plan View and an end elevation respectively of an im proved jaw plate forming another part of the same; Figs. 6 and 7 are a side elevation and an end elevation respectively of a subcombination of elements forming a part of this invention; Fig. 8 is a transverse section on line 8% of Fig. 6; Figs. 9 and 10 are a front elevation and an end view respectively of an adjusting plate seat forming a part of this invention, and Fig. 11 is a top plan view of another detail of the same.

Referring to the drawings, one embodiment of this invention comprises a rigid stationary frame 10, provided adjacent one end with bearings 11 in which a main cylindrical horizontal driving shaft 12 is arranged to rotate about a fixed horizontal axis coincident with its longitudinal axis. The main driving shaft 12 is provided with a. fly wheel 13 rigidly secured thereto, and is connected in any suitable manner to be rotated by any suitable motor.

Rigidly secured to the frame 10 is a stationary jaw 15, which is preferably provided with a substantially vertical inner face 16, against which is rigidly secured by any suitable means a vertical stationary aw plate 17. For cooperating with the stationary jaw plate 17, an improved swing- Specification of Letters Patent.

Patented Feb. 6, 1917.

Serial No. 75,908.

ing jaw plate 20 is mounted upon and carried by a swinging jaw 21, which depends downwardly from a horizontal cylindrical jaw shaft 22 carried by the frame 10, the swinging jaw 21 being arranged to oscillate about a fixed horizontal axis coincident with the longitudinal axis of the jaw shaft 22.

For oscillating the swinging jaw 21, a rigid lever 25 is provided, which is mounted atone end upon a horizontal. cylindrical lever shaft 26 carried by the frame 10, the lever 25 being arranged to oscillate about a fixed horizontal axis coincident with the longitudinal axis of the lever shaft 26. The

lever 25 is inclined upwardly from the lever shaft 26 and carries atits upper end a roll 27 which is arranged to rotate about a horizontal axis fixed with respect to the lever. The roll 27 rests rotatably upon and is actuated by an eccentric 28, which surrounds and is rigidly secured to the main driving shaft 12, and which'acts through the roll 27 to oscillate the lever 25 about the lever shaft 26, when'the main driving shaft 12 is rotated.

For transmitting motion from the lever 25 to the swinging jaw 21, and for varying the amount of movement of the swinging jaw 21 in response to a given amount of movement of the lever 25, a rigid adjusting plate-or element is arfangedbetween the lever 25 and the swinging jaw 21. and is loosely and terminally supported by two rigid seats or members 36 and 37. One, 36, of these seats engages in a recess 38, provided therefor in the lever 25, and is rigidly held in place by means of two bolts 39, each which is provided atone end with a nut 40 and at its opposite end with a wedge-shaped or taperinghead 41, the bolt heads ll being arranged to engage respectively in two tapering recesses 42 provided therefor in the upper edge of the seat 36, and the opposite edge of the seat 36 being also provided with two similar tapering recesses -12 adapted to receive the bolt heads 4:1 when the seat is reversed. The other, 37, of these seats engages in a recess43 provided therefor in the swinging jaw 21, and is rigidly held in place by two set screws 14;, this latter seat being also reversible. The seat 36 which is carried by thelever 25 is provided upon its outer surface with a set of two grooves or ing plate are substantially convex in shape and are of substantially the same curvature as the grooves 15, e6, 47 and 48 of the seats 36 and 37, and the adjusting plate 35 is adjustable to engage at one end in either of the grooves or 16 of one of the seats and at its opposite end with the corresponding opposed grooves 17 or as of the other seat 37. The adjusting plate 35 is held against lateral movement by two retaining plates 49, which are rigidly secured to the opposite ends of the adjusting plate by means of bolts and pins 51 or in any other suitable manner. The retaining plates as) project in opposite directions from the adjusting plate and overlap the sides of the seats 36 and The seats 36 and 37 converge upwardly, and the grooves in the seats are so arranged that when the adjusting plate 35 is between the lower opposed pair do and 47 of these grooves, as shown in Fig. 1, it will be nearer to the axis of oscillation of the lever 25 than when in the upper pair of opposed grooves 16 and 4 8, and consequently when the adjusting plate is in the upper position the amount of motion of the swinging jaw 21 in'response to a given amount of motion of the lever 2-5 will be greater and the lower end of the swinging jaw will approach nearer to the lower end of the stationary jaw than when the adjusting plate is" in the former position. The walls of the upper pair of grooves 46 and 48 are nearer together than the walls of the lower pair of grooves 4:5 and 4:7, and, consequently when a given adjusting plate 35 is moved from the lower to the upper pair of grooves,the lower end of the swinging aw plate 20 will be caused to approach nearer to the lower end of the sta. tionary aw plate 17 and a liner product will result than when the given adjusting plate is in the lower pair of grooves. Each of the seats 36 and 37 may be reversed in its recess to compensate for any unevenness in the wear upon the walls of the grooves.

To maintain the roll 27 in contact with the eccentric 28 and to press the swinging jaw 21 normally in a clockwise direction as viewed in Fig. 1, to clamp the adjusting plate 35 securely in position between, the seats 36 and 37 and to cause the swinging jaw 21 to f llow the movement of the lever 25 when the lever 25 is moved in an anticlockwise direction, a helical spring 54L is seated at one end in a suitable socket 55 provided therefor in the free end of the lever 25 and is engaged at its other end and normall y held under a state of compression by a cap 56 upon one end of a stem or strut 57, arranged to slide longitudinally through a stationary bracket 58, and the other end of which engages against a lug 59 projecting upwardly from and rigid with the swinging 62 of the projections are preferably substantially flat and arranged obliquely with respect to theouter substantially'fiat surface of the swinging jaw, and each preferably forming an acute angle with the outer.

fiat surface of the swinging jaw. These projections 60 engage in corresponding recesses 65 provided in the under surface of the swinging jaw plate 20 and, spaced along the lower end or marginal edge of the swinging jaw plate 20. These projections 60 fit snugly in the recesses 65, and the upper inclined surfaces 62 of the projections engage flatly against corresponding flat inclined surfaces 66 forming the upper walls of the recess 65, and cooperate therewith to clamp the swinging aw plate 20 against the swinging jaw 21 as the swinging jaw plate is forced downwardly against the projections 60.

For forcingthe swinging jaw plate 20 downwardly against the projections 60 and l for clamping it securely against the jaw 21, a retaining or wedge plate 70 is arranged above the jaw plate and is clamped in position by a plurality of bolts 71 which extend through. the wedge plate and through the swinging jaw 21. provided at one end with a tapering or conical head 72, which engages in a corresponding recess 73provided therefor in the outer face of the wedge plate, and is provided at 1 its other end with nuts 74 and a washer 75. The under surface of the upper marginal portion of the wedge plate 70 rests against a suitable seat, preferably comprising a plurality of projections 76 integral with the swinging jaw 21, and the upper edge of the wedge plate abuts against a shoulder 77 integral with the swinging jaw. The lower cndwall 78 of the wedge plate 70 is substantially fiat and abuts against the upper end wall of the aw plate 20, these two walls being substantially co-incident with a plane oblique to the plane of the face of the swinging jaw and inclined in such a direction that as the wedge plate 70 is drawn toward the Each of the bolts 71 is" swinging aw by the bolts 71, it will act to force the swinging jaw plate 20 downwardly against the projections 60, and to clamp the swinging jaw plate 20 against the swinging jaw 21.

To prevent the swinging jaw plate 20 from shifting laterally or sidewise during the operation of the machine, lugs or projections 30 may be provided in the swinging jaw to engage snugly in recesses 81 provided therefor in the upper edge of the wedge plate and lugs or projections 82 may be provided on the lower end of the clamping plate 70 to engage snugly in recesses 83 provided therefor in the upper end of the swinging jaw plate 20. Without means for preventing the lateral shifting of the jaw plate it has been found practically impossible to clamp the jaw plate in place tight enough to prevent such shifting and a consequent loss in the efiiciency of the machine and an increase in the power and labor required in the operation of the machine. The lateral shifting of the jaw plate in other crushing machines has frequently resulted in causing the aw plate to rub against the cheek plate thus producing useless friction and increasing the power necessary to drive the machine. This lateral movement of the jaw plate also increases the width of the normally narrow space between the jaw plate and one of the cheek plates to such an extent as to permit finely crushed stone to fall through this space and to accumulate under the swinging jaw and lever to such an extent as to require frequent removal 'to avoid interference with the operation of the machine.

To permit of the reversal of the swinging jaw plate 20 to compensate for any unevenness in wear, the lower and upper ends of the swinging aw plate 20 are formed alike, each end being provided upon its under surface with a plurality of spaced recesses 65,

adapted to receive the projections 60 of the swinging jaw, and each end being provided with a plurality of recesses 83 adapted to receive the lugs 82 of the wedge plate 70, the latter recesses being spaced between the recess 65 adapted to receive the projections 60. In this construction, when the swinging jaw plate 20 is secured in an operative position upon the swinging jaw 21, the lower end of the swinging jaw plate 20 is preferably sub stantially flush with the lower end of the swinging jaw 21, and with the lower walls of the projections 60, and the outer ends 61 of the projections 60 are thus entirely covered and protected by the lower portion of the swinging jaw plate 20.

in the operation of this device the rock, stone, or other material to be broken or crushed is placed between the stationary jaw plate 17 and the swinging jaw plate 20, and as the swinging jaw plate 20 is oscillated by the oscillation of the lever 25 in response to the action ofthe eccentric 28 upon the roll 27, the rock or other material is crushed or broken successively into smaller pieces, and gradually passes downwardly and finally falls from between the jaw plates and is carried away by the chute 85. Several adj usting plates, 35, of different widths are provided with each crusher so that the size or degree of fineness of the crushed material which is produced by the crusher may be varied by substituting for one adjusting plate 35 an adjusting plate of a different width. The size of the crushed product may also be varied by inserting one or more thin flat plates behind either of the seats 36 between the seat and its supporting member. For crushing soft stone or other material. which passes through the space between the jaws slowly, the adjusting-plate 35 is preferably arranged in the upper pair of grooves in the seats 36 and 37, to give a maximum swing of the swinging aw and a consequent maximum speed of operation and a maximum amount of output or crushed product. The degree of fineness or size of the product may in any case be controlled by using an adjusting plate 35 of suitable width.

Although only a single form has been shown in which this invention may be embodied, it is to be understood that this invention is not limited to any specific construction, but might be embodied in various forms without departing from the spirit of the invention or scope of the appended claims.

Having thus fully described my invention, I claim and desire to protect by Letters Patent of the United States:

1. In a crusher, the combination with a jaw, of a jaw plate supported thereby, said jaw being provided with a plurality of horizontally alined spaced projections rigid therewith and extending outwardly therefrom and engaging respectively in a pluralit of spaced openings provided therefor in said jaw plate, said openings being so arranged that the outer ends of said pro jections are protected by said jaw plate.

2. In a crusher, the combination with a jaw provided with a projection, of a jaw plate supported by said jaw and covering said projection provided with an opening in which said projection engages, and means arranged to clamp said jaw plate against said projection.

In a crusher, the combination with a.

jaw provided with a plurality of spaced projections, of a jaw plate supported by said jaw and provided with a plurality of spaced openings in which said projections engage respectively, and means arranged to clamp said jaw plate against saidpro ections, said openings being arranged so that the outer ends of said projections are protected by said jaw plate, and said projections and said openings having cooperating walls arranged to clamp said jaw plate against said jaw as said jaw plate is clamped against said projections.

l. In a crusher, the combination with a jaw provided with a marginal projection, of a jaw plate provided with a marginal recess in which said projection engages, and means arranged to clamp said jaw plate against said projection, said recess being arranged so that the outer end of said projeetion is protected by said jaw plate, and said projection and said recess having walls cooperative to clamp said aw plate a 'ainst said jaw as a result oi? the clamping or said jaw plate against said projection.

In a crusher, the combination with a jaw provided with a projection, of a jaw plate carried by said jaw and having an opening in which said projection engages, said projection extending from said jaw in the direction of the working face of said jaw plate and terminating at a point spaced between said working face and said aw and behind the outer surface of said working face.

6, In a crusher, the combination with a movable member, of a second movable member, an element carried by one of said members and adjustable with respect thereto and provided with a set of recesses, an element carried by the other of said members and adjustable with respect thereto and provided with a set of recesses corresponding to and opposed to said first mentioned set,- means between said elements and engaging simultaneously in a recess of one of said sets and a corresponding recess of the other of said sets for transmitting motion from one of said members to the other of saidrmembers and means operative to preprovided with a projection engaging in arecess provided therefor in the other of said plates and operative to force said jaw'plate.

against said jaw when said retaining plate is clamped in position.

8. The combination with a jaw, of a aw plate carried thereby, a retainingplate for, clamping said jaw plate in position, and means for securing said retaining plate to said jaw, saidi jaw being provided with a plurality of projections engaging respec tively in recesses provided therefor in one edge of said retaining plate and said retaining plate being provided with projections engaging respectively in recesses provided therefor in said jaw plate. 7

The combination with a jaw, of a jaw plate carried thereby, a retaining plate for clamping said jaw'plate in position, and means for securing said retaining plate to said jaw, said jaw being provided with a projection engaging in a recess provided therefor in one edge of said retaining plate, and said retaining plate being provided with a projection engaging in a recess provided therefor in said jaw plate.

In witness whereof I have hereunto set my hand this 1st day of February, A. D. 1916.

ROBERT EUBANK LnienToN.

Witnesses S. H. GHAOGOLLECT,

E. L. BUTLER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of I'atents,

Washington, I). C. 

